CN103597165A

CN103597165A - Variably configurable wellbore junction assembly

Info

Publication number: CN103597165A
Application number: CN201280025955.1A
Authority: CN
Inventors: D·J·斯蒂尔; J-m·兰杰瓦
Original assignee: Halliburton Energy Services Inc
Current assignee: Halliburton Energy Services Inc
Priority date: 2011-06-03
Filing date: 2012-05-18
Publication date: 2014-02-19
Anticipated expiration: 2032-05-18
Also published as: RU2588999C2; RU2016122049A; AU2012262775A1; US20130175047A1; RU2719842C2; RU2016122049A3; EP2715040A4; US8967277B2; AU2017268527A1; EP2715040A1; CA2836918A1; EP2715040B1; CA3010238C; AU2012262775B2; WO2012166396A1; CA3010238A1; BR112013030903B1; RU2013158316A; CA2922471A1; AU2016202152B2

Abstract

A method of installing a wellbore junction assembly in a well can include connecting at least two tubular strings to one opposite end of a tubular string connector with similarly dimensioned oriented connections, whereby the tubular strings are interchangeably connectable to the connector by the oriented connections. A wellbore junction assembly can include at least two tubular strings and a tubular string connector having opposite ends. Each of the tubular strings may be secured to one opposite end of the connector by oriented connections, whereby each of the tubular strings has a fixed rotational orientation relative to the connector. A well system can include a tubular string connector, each of first and second tubular strings being secured to the connector, and a support which reduces bending of the second tubular string which results from deflection of the second tubular string from one wellbore section into another wellbore section.

Description

Varistructured pit shaft coupling assembling

Technical field

The present invention relates generally to go into the well the in combination equipment of use and the operation of execution, in example described below, is provided for particularly the varistructured pit shaft coupling assembling of branch well cylinder.

Background technology

Pit shaft connects the connectivity that branch or multiple lateral pit shaft are provided.So connectivity can comprise the fluid connection of sealing and/or the passage between some pit shaft part.

Regrettably, typical pit shaft connection structure (for example, the passage between the connection of the fluid of sealing and/or some pit shaft part) can not change to adapt to special well situation.Therefore, will recognize that, improve to be useful in structure pit shaft coupling assembling technology.

Summary of the invention

In following disclosure, provide structure pit shaft coupling assembling technology is brought to improved apparatus and method.An example is described below, and wherein, pit shaft coupling assembling can be configured to allow to enter one or the other in a plurality of tubular drill string that is connected to connector selectively.Another example is described below, and wherein, directed connection is used for interchangeably tubular drill string being connected to connector.

In one aspect, following disclosure is described pit shaft coupling assembling is arranged on to the method in well.The method can comprise: by the orientation of similar size, connect, at least two tubular drill strings are connected to an opposite end of tubular drill string connector, thus, tubular drill string can be connected and is connected to interchangeably connector by orientation.

On the other hand, the invention provides pit shaft coupling assembling technology.This assembly can comprise at least two tubular drill strings and have the tubular drill string connector of opposite end.Each tubular drill string can be affixed to an opposite end of connector by orientation, thus, each tubular drill string has the fixedly rotational orientation with respect to connector.

Also having on the other hand, the well system the following describes can comprise tubular drill string connector, a plurality of tubular drill strings that are fixed to connector, and the supporting member that reduces tubular one of them drill stem buckling of drill string, this bending partly deflects into another pit shaft part owing to tubular drill string from a pit shaft.

On the other hand, to industry, provide a kind of well system, this well system can comprise tubular drill string connector, connector has the first and second opposite ends, be fixed to the first and second tubular drill strings of first-phase opposite end, the first and second tubular drill strings are arranged in pit shaft part intersecting each other separately, be fixed to the third and fourth tubular drill string of second-phase opposite end, the 4th drill string is arranged in the 3rd tubular drill string, first-class dynamic control device, it allows selectively and stops fluid to flow through the longitudinal flow passage of the 3rd tubular drill string, and second dynamic control device, it allows selectively and stops fluid to flow through the longitudinal flow passage of the 4th tubular drill string.

Technician thinks over the following the detailed description and the accompanying drawings to representative example in the art, will be appreciated that above-mentioned feature, advantage and benefit with other, in various accompanying drawings, with identical Reference numeral, carrys out the like in presentation graphs.

Accompanying drawing explanation

Fig. 1 is the representative partial sectional view of well system and the correlation technique that can implement the principle of the invention.

Fig. 2 is the representative partial sectional view that can be used for the pit shaft coupling assembling in Fig. 1 system and method.

Fig. 3 is the representative cross sectional detail that can be used in Fig. 2 pit shaft coupling assembling and can implement the tubular drill string connector of the principle of the invention.

Fig. 4 A-G is the representative cross sectional detail of pit shaft coupling assembling axial cross section.

Fig. 5 A-E is mounted in the representative cross sectional detail of the pit shaft coupling assembling in branch well cylinder.

Fig. 6 is that the representativeness of tubular drill string connector is looked up end-view.

Fig. 7 is that the representativeness of tubular another structure of drill string connector is looked up end-view.

Fig. 8 is the representative stereogram of another structure of pit shaft coupling assembling.

Fig. 9 is the representative lateral view of the tubular drill string supporting of pit shaft coupling assembling.

Figure 10 is the representative lateral view that tubular drill string supports another structure.

Figure 11 is the representative stereogram that tubular drill string supporting also has another structure.

Figure 12 is mounted in the representative partial sectional view of the pit shaft coupling assembling in well system 10.

Figure 13 A and B are in closing and open the representative cross sectional view of the flow control apparatus of the pit shaft coupling assembling in structure.

Figure 14 A and B are in closing and open the representative cross sectional view of another flow control apparatus of the pit shaft coupling assembling in structure.

The specific embodiment

What in Fig. 1, schematically illustrate is well system 10 and the correlation technique that can implement the principle of the invention.In well system 10, pit shaft connection 12 is formed on the intersection of three

pit shaft parts

14,16,18.

In this example, pit shaft part the 14, the 16th, the part of " parent " or main body pit shaft, and pit shaft part 18 extends outward " side direction " or branch well cylinder from main body pit shaft.In other example,

pit shaft part

14,18 can form main body pit shaft, and pit shaft part 16 can be branch well cylinder.In also having other example, three above pit shaft parts can intersect at pit shaft and connect 12, and

pit shaft part

16,18 can be the branch of pit shaft part 14 etc.Therefore, should be understood that, the principle of the invention is not confined to the well system 10 with described in literary composition shown in Fig. 1 and is connected 12 special tectonic with pit shaft.

In a specific characteristic of well system 10, pit shaft coupling assembling 20 is arranged in

pit shaft part

14,16,18, so that fluid connected sum path controlled between all parts of pit shaft to be provided.Pit shaft coupling assembling 20 comprises tubular drill string connector 22, is attached to the

tubular drill string

24,26 of connector one end 28, and the tubular drill string 30 that is attached to connector opposite end 32.

In this example, connector 22 provides the fluid-encapsulated connection between tubular drill string 30 and each tubular drill string 24,26.In addition, physical channel is arranged to by the connector 22 between at least one in tubular drill string 30 and tubular drill string 24,26.By tubular drill string being connected in directed some corresponding connection connecting, just, as wanted hereinafter complete description, can determine aisled

tubular drill string

24 or 26 is provided.

So path can allow well tool 34(such as transfer instrument, walking instrument, retrieving tool etc.) by connector 22, be transferred in one of them

tubular drill string

24,26, with operation valve or other flow control apparatus 36, this valve or other flow control apparatus 36 are being controlled longitudinal stream and are being crossed flowing of the interior tubular drill string 40 of pit shaft part 16, or operation valve or other flow control apparatus 38, this valve or other flow control apparatus 38 are being controlled flowing etc. between pit shaft 18 and tubular drill string 26 inside.For this reason, the path by connector 22 can be used for moving the purposes outside flow control apparatus, with consistent with scope of the present invention.

In the example shown in Fig. 1,

pit shaft part

14,16 is lined with sleeve pipe 42 and cement 44, but pit shaft part 18 does not add sleeve pipe or bore hole.Can form window 46 by sleeve pipe 42 and cement 44, pit shaft part 18 is stretched out from this window.

Yet, if necessary, can use other completion method and structure.For example, pit shaft part 18 can be lined, makes liner in it be connected to hermetically other parts etc. of window 46 or sleeve pipe 42.Therefore, will recognize that, the scope of the invention is not limited to described in well system 10 or literary composition or any feature of the correlation technique shown in accompanying drawing.

Deflector 48 is fixed in the sleeve pipe 42 that connects 12 places by packer, dead lock or other anchor 50.Tubular drill string 40 is sealingly secured to anchor 50 and deflector 48, so the passage 52 in tubular drill string 40 is communicated with the passage 54 in deflector 48.Tubular drill string 24 meshes with the seal 56 in deflector 48, and like this, tubular drill string 24 is communicated with hermetically with the tubular drill string 40 in pit shaft part 16.

The nose of an ox 58 being arranged on tubular drill string 26 lower ends can not be fitted in deflector 48 internal channels 54 too greatly, so when coupling assembling 20 drops in well, nose of an ox 58 laterally deflects in pit shaft part 18.Yet tubular drill string 24 can be fitted in passage 54, and when coupling assembling 20 is positioned properly as illustrated in fig. 1, tubular drill string 24 is communicated with tubular drill string 40 hermetically by passage 54.

In the example of Fig. 1, can pass through corresponding

tubular drill string

24,26, from

pit shaft part

16,18, produce fluid (such as hydrocarbon fluid, oil, gas, water, steam etc.).This fluid can flow into tubular drill string 30 by connector 22, to finally produce on the ground.

Yet, so produce scope unnecessary and of the present invention consistent.In other example, fluid (such as steam, liquid water, gas etc.) can be injected in one of

pit shaft part

16,18, and another fluid (such as oil and/or gas etc.) can be from another pit shaft part producing, and fluid can inject

pit shaft part

16,18 in both, etc.Therefore, can carry out injection and/or the production operation of any type, all be consistent with the principle of the invention.

Now, in addition with reference to Fig. 2, except the remainder of system 10, the partial sectional view of pit shaft coupling assembling 20 is schematically shown in figure.In this example, by tubular drill string 24, from pit shaft part 16, produce fluid 60 to connector 22, by tubular drill string 26, from pit shaft part 18, produce another fluid 62 to connector.Fluid 60,62 can be the fluid (such as oil, gas, steam, water etc.) of same type, can be maybe dissimilar fluid.

Fluid 62 is flowed into and is positioned in another the tubular drill string 64 in tubular drill string 30 by connector 22.Fluid 60 is flowed into and is radially formed in the space 65 between

tubular drill string

30,64 by connector 22.

The flow control apparatus 66,68 of choke or other types can be used to regulate changeably the flowing of tubular drill string 30 inner fluids 60,62 that flows into tubular drill string 64 tops.Device 66,68 can be by wired or wireless device (for example, by sound, pressure pulse or em telemetry, by fiber waveguide, electric conductor or control line etc.) carry out remote control, allow intelligent well completion, wherein, can control independently the output from each pit shaft part.

Although fluid 60,62 is shown as in the tubular drill string 30 being blended in above tubular drill string 64 in Fig. 2, will recognize that, in other example, fluid can keep isolation.In addition, although install 68, be illustrated as the passage 70 that may block by tubular drill string 64, in other examples, install 68 and can be positioned to it and effectively regulate flowing of fluid 62, and do not block this passage.

In one example, entity passageway is arranged between passage 70 and tubular drill string 26 inside (as shown in Figure 2), or is arranged between passage 70 and tubular drill string 24 inside, how to be connected to connector 22 to determine according to tubular drill string 24,26.Therefore, the items of equipment (such as well tool 34) can be delivered to tubular drill string 64 from tubular drill string 30, by passage 70, are delivered to connector 22, and are delivered to tubular drill string 26 by connector, or are delivered to tubular drill string 24.

Now, in addition with reference to Fig. 3, the cross sectional detail of tubular drill string connector 22 is schematically shown in figure.In this view, can see, connector 22 at one end 28 places is provided with

connection

72,74, and 32 places are provided with

connection

76,78 in opposite end.

Tubular drill string

24,26 is connected to connector 22 by connecting 72,74.

Tubular drill string

30,64 is connected to connector 22 by corresponding connection 76,78.Preferably, in this example, each connects 72,74,76,78 internal threads that comprise in connector 22, but if necessary, can use the connection of other type.

Connecting 72, the 74 preferably connections of technician's well-known types in the art, is the directed screw thread of high-quality.A suitable directed screw thread is VAM(TM) " FJL " directed screw thread, but also can use the orientation of other directed screw thread and other type to be connected, and still keep within the scope of the present invention.The orientation of other type connects can comprise J groove etc.

Each

tubular drill string

24,26 rotational orientation with respect to connector 22 are fixed in directed connection 72,74.In addition, if directed, connect 72,74 measure-alike (or at least similar), each

tubular drill string

24,26 can be connected to connector 22 by arbitrary orientation.

If this interchangeability of

tubular drill string

24,26 is to allow, connecting 72,74 size can be similar.Therefore, connect one of 72,74 and can slightly be different from another and connect, yet if each

tubular drill string

24,26 is operably connected to connector 22 by arbitrary connection, connects 72,74 and can remain similar size.

When pit shaft coupling assembling 20 for Fig. 1 and 2, for example, can be threaded connection tubular drill string 64 is connected to and connects 78.If necessary, connect 78 and can comprise directed a connection.For example, can be threaded connection tubular drill string 30 is connected to and connects 76.If necessary, connect 76 and can comprise directed a connection.

Because tubular drill string 64 is connected to, connect 78, it is inner and be connected between the inside that connects 74

tubular drill string

24 or 26 that entity passageway can be arranged on tubular drill string 64.In the example of Fig. 1, well tool 34 can be transferred to tubular drill string 64 tops by tubular drill string 30, is transferred to connector 22, and is transferred in tubular drill string 24 by connector by tubular drill string 64.

In this example, tubular drill string 24 can be connected to connector 22 by connecting 74.Alternatively, tubular drill string 26 can be connected to connector 22 by connecting 74, and in this case, well tool 34 can be transferred to tubular drill string 64 from tubular drill string 30, and is for example transferred to tubular drill string 26(by connector, in order to move flow control apparatus 38).

Before coupling assembling 20 is installed in well, can make one's options, in

tubular drill string

24,26 which can by connector 22 entities enter.Use the

connection

72,74 of similar sizing to guarantee: tubular drill string 24 can be connected to connector 22 by arbitrary connection, and tubular drill string 26 can be connected to connector by another connection.

In addition, use directed

connection

72,74 to guarantee: when tubular drill string is connected to each other,

tubular drill string

24,26 will carry out rotational orientation suitably with respect to connector 22.This feature is favourable, for example, by deflector 48 etc., nose of an ox 58 for deflection suitably rotational orientation in pit shaft part 18.

Preferably, it is all directed connection that all between nose of an ox 58 and connector 22 are threaded, like this, when all, be threaded while forming, nose of an ox suitably rotational alignment with laterally deflection away from deflector 48.Alternatively, except nose of an ox 58, all parts of tubular drill string 26 can be formed, and then, can cut the upper screw thread on nose of an ox, and like this, when nose of an ox forms the remainder of tubular drill string, nose of an ox is rotational alignment suitably.

Also have another replacement scheme to be, except the little joint (quite short barrel portion) of nose of an ox 58 and nose of an ox top, can form all parts of tubular drill string 26.Then, little joint (for example, little joint between device 38 and nose of an ox 58) can (for example be selected or customize processing, between its end, there is selected departing from of rotating), so, when little joint and nose of an ox are assembled on the remainder of tubular drill string 26, nose of an ox suitably rotational orientation and laterally deflection away from deflector 48.This little joint can be provided with directed screw thread in its Huo Liangge end, arbitrary end.

Now, in addition with reference to Fig. 4 A-G, in more detailed sectional view, the selected axial cross section of coupling assembling 20 is schematically shown in figure.Coupling assembling 20 can be used in the well system 10 and method of Fig. 1, or can be used in other system and method to keep consistent with the principle of the invention.

It should be noted that, replace the lower end that is connected to tubular drill string 26, the nose of an ox 58 shown in Fig. 1 can be used for the top of tubular drill string small diameter and the transition between the larger-diameter bottom of tubular drill string.The larger-diameter bottom of tubular drill string 26 can comprise various parts, for example, such as husky net, packer, stopper, liner, valve, choke, black box (for example, puncture the liner tubing string being previously arranged in pit shaft part 18 grades), the completion parts of control line (for example, operation valve, choke etc.) etc.The lower end of tubular drill string 26 can comprise that lateral deflection is away from another parts (being similar to nose of an ox 58) of deflector 48.In this case, install in 38 any that can be connected in the less of tubular drill string 26 or larger diameter part.

In Fig. 4 A, can see that tubular drill string 64 is positioned in tubular drill string 30.Another tubular drill string (as being shown as 64a in Fig. 4 A) is arranged in tubular drill string 64 hermetically, and effectively becomes a part for tubular drill string 64.Top " scoop head " 80 is arranged on tubular drill string 64, and easily tubular drill string 64a is inserted wherein, meanwhile, coupling assembling 20 is in this well.

In this example, the flow control apparatus 66,68 of Fig. 2 can be interconnected in tubular drill string 64a.Therefore, at coupling assembling, be arranged on after pit shaft in well connects 12 places, tubular drill string 64a for example, can be arranged in coupling assembling 20 together with flow control apparatus 66,68 and other equipment (, telemetering equipment, line etc.).In addition, if necessary, tubular drill string 64a can regain (for example, in order to safeguard, to repair, replacing etc.) easily together with flow control apparatus 66,68 and other equipment from coupling assembling 20.

In Fig. 4 B, can see, the seal 82 being carried on tubular drill string 64a meshes the closed hole 84 being formed in tubular drill string 64 hermetically.The engagement of seal 82 in closed hole 84 provides the fluid-encapsulated connection between tubular drill string 64 inner passages 86 and the inner passage 88 of tubular drill

string 64a.Passage

86,88 can comprise passage 70 as shown in Figure 2 together.

In Fig. 4 C, can see, the dead lock 90 being carried on tubular drill string 64a meshes the in-profile 92 being formed in tubular drill string 64 releasedly.Like this, tubular drill string 64a is fixed in tubular drill string 64 releasedly.Closed hole 84 and profile 92 can be identical, or similar in that type of using on traditional polished bore socket known by the technical staff in the art.

In Fig. 4 D, can see, the lower end engagement of tubular drill string 64a is formed on the shoulder 94 in tubular drill string 64.Should make suitably with the engagement of shoulder 94 tubular drill string 64a with respect to tubular drill string 64 location.

In Fig. 4 E, can see, passage 86 laterally departs from tubular drill string 64.This lateral deviation be alternative (be described in literary composition and accompanying drawing shown in the further feature of coupling assembling 20), but in this example, this departs from the variation that adapts to outer tubular drill string 30 wall thickness, and makes the center of tubular drill string more outward, tubular drill string 64 positions.Scoop head 80(is shown in Fig. 4 A) tubular drill string 64 tops that are used in the tubular drill string 30 of centering more closely.

In Fig. 4 F, can see, tubular drill string 64 is connected to connector 22 by connecting 78.Tubular drill string 30 is connected to connector 22 by connecting 76.Tubular drill string 24 connects by connecting 72, and tubular drill string 26 connects by connecting 74.Therefore, in this example, entity passageway is arranged between tubular drill string 64 and tubular drill string 26, by connector 22.

In Fig. 4 G, the structure of coupling assembling 20 slightly changes, and changes part and is, tubular drill string 24(replaces tubular drill string 26) by connecting 74, be connected to connector 22.Tubular drill string 26 connects by connecting 72.Therefore,, in this structure, entity passageway is arranged between tubular drill string 64 and tubular drill string 24, by connector 22.

Now, in addition with reference to Fig. 5 A-E, the cross sectional detail of the coupling assembling 20 in the

pit shaft part

14,16,18 that is arranged on well system 10 is schematically shown in figure.For simplicity's sake, the remainder of well system 10 is not shown in Fig. 5 A-E.

In Fig. 5 A-E, can be clear that, the feature of coupling assembling 20 how to cooperate to provide convenience and be effectively arranged in

pit shaft part

14,16,18.It should be noted that, tubular drill string 64a is not also arranged in the structure of Fig. 5 A-E, should be understood that, for being consistent with the scope of the invention, tubular drill string 64a must not install.

Now, in addition with reference to Fig. 6, the upward view of connector 22 is schematically shown in figure.In this view, can see, if two connect 72,74 lower ends 28 that are arranged on connector 22, connect 72,74 and be preferably relative to each other oriented 180 degree.

As shown in Figure 6, the little triangle of feature 96 use of connection 72 of controlling the rotational orientation of the tubular drill string that is connected to connection represents (position of triangle representative feature, rather than feature itself).This feature 96 can be the initial of screw thread, the end of screw thread, the part of J groove etc.Any control by connecting 72 features of rotational orientation that are connected to the tubular drill string of connector 22, can be used as feature 96.

Connect 74 and there is similar feature 98.It should be noted that, feature 96,98, together with the remainder that connects 72,74, is relative to each other oriented 180 degree.Like this, tubular drill string can rotate 180 degree between two states, and state is to be operably connected to connector 22 by connecting one of 72,74, and another state is to be operably connected to connector 22 by another connection.Certainly, also can use other rotational orientation that connects 72,74, to be consistent with the scope of the invention.

Now, in addition with reference to Fig. 7, another structure of connector 22 is schematically shown in figure.In this structure, three connections 72,74,100 are arranged on bottom end 28 places of connector 22.Connecting 100 can be a kind of directed connection, and/or to connect 100 can be to be connected 72,74 similar sizes with other, and like this, identical tubular drill string can be connected to any connection 72,74,100.

The example of Fig. 7 shows, any amount of connection can be arranged on connector 22, to be consistent with the scope of the invention.In addition, it should be noted that, connect 72,74,100 and be relative to each other oriented 120 degree, show to use any connection directed, to be consistent with the scope of the invention.

Compare with Fig. 6 example, feature 96,98 is differently directed in Fig. 7.Yet, feature 96,98(and the similar characteristics 102 that connects 100) be preferably also relative to each other oriented rotationally 120 degree.This shows any rotational orientation that can use characteristic, to be consistent with the scope of the invention.

Although be connected 72,74,100 in 7 to be shown as equal angles ground spaced at Fig. 6, and the migrations rotationally such as feature 96,98,102 is shown as relative to each other, but scope of the present invention comprises the non-equal angular spacing of connection and the non-displacement that waits rotation between the feature of connection.

Now, in addition with reference to Fig. 8, another structure of pit shaft coupling assembling 20 is schematically shown in figure.In this structure, it laterally deflects into tubular drill string 26(in pit shaft part 18) comprise tubular drill string supporting member 104, in installation process, reduce the flexural stress in tubular drill string 26, and prevent tubular drill string 26 flexings.

Supporting member 104 can be interconnected in tubular drill string 26 in every way.For example, supporting member 104 can be provided with screw thread (such as directed screw thread, or the orientation of other type connects), in order to the connection between the upper and lower of tubular drill string 26, or this supporting member can slide on the outside of tubular drill string, and fixing with hold-down screw, fixture etc.Therefore, will recognize that, can make in any way supporting member 104 to be attached to tubular drill string 26, or supporting member is interconnected in tubular drill string 26, to be consistent with the scope of the invention.

Supporting member 104 is preferably adjacent at least in part another tubular drill string 24 and extends.For example, supporting member 104 can straddle on tubular drill string 24 as shown in Figure 8 at least in part.

The extending laterally " leg " 106 and can be configured with various lateral length of supporting member 104, they make the element of tubular drill string 26 spacing such as deflector 48, window 46, pit shaft part 18 etc.Tubular drill string 26 and the so spacing of element, play the function that reduces tubular drill stem buckling when tubular drill string is installed in pit shaft part 18, and this will intactly describe hereinafter.

In the structure of Fig. 8, the leg 106 of supporting member 104 extends to the largest outer diameter of the tubular drill string 24 that is similar to adjacent support part.Preferably, supporting member 104(comprises leg 106) not side direction outwards extend beyond the extension of connector 22, so in installation process, supporting member and

tubular drill string

24,26 can be by same top pit shaft parts 14.

Now, in addition with reference to Fig. 9, the lateral view of supporting member 104 is schematically shown with magnification ratio in figure.In this structure, leg 106 not side direction outwards extends to as constructed in Fig. 8 far away.Therefore, in coupling assembling 20 installation processes, compare with the structure of Fig. 8, spacing is not far for the various elements (for example, deflector 48, window 46, pit shaft part 18 etc.) of tubular drill string 26 and well system 10.

Now, in addition with reference to Figure 10, another structure of supporting member 104 is schematically shown in figure.In this structure, leg 106 side direction are ratio of elongation Fig. 8 and the longer distance of 9 structure outwards.Therefore,, in coupling assembling 20 installation processes, tubular drill string 26 for example, obtains farther by the various elements of spacing well system 10 (, deflector 48, window 46, pit shaft part 18 etc.) than the structure spacing of Fig. 8 and 9.

Now, in addition with reference to Figure 11, except the remainder of coupling assembling 20, another structure of supporting member 104 is schematically shown in figure.In this view, can be clear that leg 106 can straddle the mode on tubular drill string 24.

Before tubular drill string 26 laterally deflects in pit shaft part 18, tubular drill string 24 is received within and is formed in longitudinal recessed 108 on supporting member 104.The opening 110 longitudinally forming by supporting member 104 can be provided with directed connect (such as directed screw thread, J groove etc.), or this opening can be enough greatly to be received in tubular drill string 26 wherein, in this case, hold-down screw, fixture or other device can be used to supporting member to be fixed on tubular drill string.

Now, in addition with reference to Figure 12, tubular drill string 26 is schematically depicted as in the drawings it and laterally deflects in pit shaft part 18 in coupling assembling 20 installation processes.It should be noted that, the tubular drill string 26 of leg 106 spacing of supporting member 104 is away from deflector 48, once after further installing, the leg of supporting member 104 by the tubular drill string of spacing away from window 46 and pit shaft part 18.

Supporting member 104 makes this spacing of tubular drill string 26, has reduced the bending of tubular drill string, thus, reduces the flexural stress in tubular drill string.If in the process in being installed to pit shaft part 18, tubular drill string 26 meets with obstruction or limits, the bending that tubular drill string reduces also can prevent the flexing of tubular drill string, for example, if particularly additional longitudinal force (is applied to tubular drill string, weight is lowered into assembly 20 first-class), to cross this obstruction or restriction.

Supporting to tubular drill string 26 in this way, in the pit shaft part of level or deflection substantially, (all pit shaft parts 18 as shown in figure 12) can be favourable especially.In this case, tubular drill string 26 can stand gravity, is tending towards making tubular drill string to lie low on deflector 48, window 46 and pit shaft part 18 downsides in installation process.

Now, in addition with reference to Figure 13 A and B, another structure of pit shaft coupling assembling 20 is schematically shown in figure.In this structure, when tubular drill string 64a is arranged on coupling assembling 20 when interior, open the flow control apparatus 112 in the tubular drill string 30 of connector 22 tops.

In Figure 13 A, before tubular drill string 64a is arranged in coupling assembling 20 completely, close flow control apparatus 112.In this structure, install 112 closure member 114 and prevent flowing of inner flow passage 116 by tubular drill string 30.

Owing to passing through mobile blocked (as shown in FIG. 13A) of passage 116, valuable completion fluid, mud or other fluid can be prevented from flowing through coupling assembling 20 and flow in

pit shaft part

16,18, here, they can be lost in the stratum that surrounds these pit shaft parts.If

pit shaft part

16,18 completion is under underbalance condition, the device 112 in this closed structure can prevent that the pressure that pit shaft coupling assembling 20 tops increase is connected with

pit shaft part

16,18, otherwise this connection can damage and pit shaft crossing stratum partly.If this device is not closed, in some cases, the pressure that installs 112 tops risings can cause undesirable fracture, or other form is damaged the stratum crossing with

pit shaft part

16,18.

Device 112 can be that technician is known as the type of fluid loss control device in the art.In Figure 13 A and B, install 112 and be illustrated as ball valve, closure member 114 comprises rotating ball.Yet in other example, this device 112 can comprise flapper valve or the openable mobile blocking device of other type.

A suitable mobile blocking device is ANVIL(TM) chock plug, this ANVIL(TM) chock plug produced by Halliburton's energy services Co., Ltd (Halliburton Energy Service, Inc.) in Texas, USA Houston city.Also having suitable mobile blocking device is in addition Mirage(TM) disappearance chock plug, also by Halliburton's energy services Co., Ltd, to be produced, it comprises dispersible closure member.Therefore, will recognize that, can block with any device by the flowing of passage 116, and then allow by the flowing of passage, to be consistent with the scope of the invention.

In the example of Figure 13 A and B, in response to tubular drill string 64a, be fit in tubular drill string 30 device for opening 112.In this structure, when tubular drill string 64a is inserted into tubular drill string 30 when interior, dead lock 90 complementally meshes profile 92(, and it is formed in sleeve 118, and sleeve is reciprocally arranged in tubular drill string 30).

As shown in FIG. 13A, tubular drill string 64a has inserted in tubular drill string 30 far enough, so that the profile 92 in dead lock 90 mesh sleeves 118.As shown in Figure 13 B, tubular drill string 64a has further been inserted in tubular drill string 30, and sleeve 118 is thus with tubular drill string 64a displacement.

Sleeve 118 causes closure member 114 to be opened with the displacement of tubular drill string 64a, as shown in Figure 13 B.In this example, closure member 114 turns to the position of opening, but in other example, this closure member can be sheared, fragmentation, pivotable, dissolving or alternate manner distribution etc., like this, allows to flow through passage 116.

After device 112 is opened, tubular drill string 64a can further insert in tubular drill string 30, makes the engagement (for example, owing to applying enough longitudinal forces to tubular drill string 64a, or it is first-class that weight is lowered into tubular drill string) of dead lock 90 disengagements and profile 92.

Now, in addition with reference to Figure 14 A and B, after tubular drill string 64a has further inserted in coupling assembling, the cross section of pit shaft coupling assembling 20 is schematically shown in figure.Specifically, tubular drill string 64a has partly been inserted in tubular drill string 64.

In Figure 14 A, tubular drill string 64a has been inserted in tubular drill string 64 far enough, so that dead lock 90 complementally meshes the other profile 92 that is interconnected in another flow control apparatus 120 in tubular drill string 64.Flow control apparatus 120 can be interconnected in tubular drill string 30 in flow control apparatus 112 identical, similar or not identical.

In this example, profile 92 is formed in sleeve 122, and sleeve reciprocally arranges with respect to the passage 86 in tubular drill string 64.The displacement of sleeve 122 causes the closure member 124 of device 120 to be opened.

In Figure 14 B, closure member 124 has been opened, and thus, allows to flow through passage 86.After device 120 is opened, tubular drill string 64a can further be inserted in tubular drill string 64, makes the engagement (for example, owing to applying enough longitudinal forces to tubular drill string 64a, for example, weight being lowered into tubular drill string first-class) of dead lock 90 disengagements and profile 92.

Device 120 in closing structure preferably stops fluid to flow between pit shaft part 16,18.Because device 120 is closed (as shown in Figure 14 A), fluid can not flow between the passage 86 below space 65 and device.Therefore,, if had different strata pressures by

pit shaft part

16,18 crossing stratum, the device 120 of closing in structure in it will stop fluid from the stratum of elevated pressures, to transfer to the stratum of lower pressure.

Now can see, tubular drill string 64a is inserted in coupling assembling 20, can be used to device for opening 112, then, and device for opening 120.Device 112,120 is opened (thus, device for opening 112) in response to tubular drill string 64a by the displacement of tubular drill string 30, and by the displacement of tubular drill string 64, opens (thus, device for opening 120) in response to tubular drill string 64a.

Device for opening 112 provides the fluid between tubular drill string 30 upper and lowers to be communicated with, and device for opening 120 provides the fluid between tubular drill string 64 upper and lowers to be communicated with.In other words, device for opening 112 provides the fluid by coupling assembling 20 tops to be communicated with, and device for opening 120 provides fluid between

tubular drill string

24,26 to be communicated with and

pit shaft part

16,18 between fluid be communicated with.

Now can fully recognize, the technology that the present invention connects structure pit shaft provides significant improvement.Above-mentioned tubular drill string connector 22 can be used to determine: after coupling assembling 20 is installed, in a plurality of

tubular drill strings

24,26, which can enter entity.

Tubular drill string

24,26 is connected to interchangeably has directed 72,74 the connector 22 that connects.

Above disclosure has been described pit shaft coupling assembling 20 has been arranged on to the method in well.The method can comprise: with size is similarly directed, connect 72,74, the at least the first and second

tubular drill strings

24,26 are connected to the first-phase opposite end 28 of tubular drill string connector 22, thus, with directed

connection

72,74, the first and second

tubular drill strings

24,26 are connected to connector 22 interchangeably.

Connection Step can comprise each the first and second

tubular drill string

24,26, and they have the rotational orientation with respect to connector 22, and this rotational orientation can be determined by corresponding directed

connection

72 or 74.

The method can comprise that the orientation on connector is connected to 72,74 is relative to each other oriented 180 degree, and/or substantially makes to equal angles directed connection spaced each other.

The method can comprise the second-phase opposite end 32 that the 3rd tubular drill string 30 is connected to connector 22.The method also can comprise the second-phase opposite end 32 that the 4th tubular drill string 64 is connected to connector 22.The 4th tubular drill string 64 can be positioned in the 3rd tubular drill string 30 at least in part.

Can enter into the 4th tubular drill string 64 and only between of the first and second

tubular drill strings

24,26 by connector 22.

The 4th tubular drill string 64 can comprise closed hole 84.The 5th tubular drill string 64a is sealably arranged in closed hole 84.

The method can comprise the installation in the 4th tubular drill string 64 in response to the 5th tubular drill string 64a and open flow control apparatus 120.Open flow control apparatus 120 and can comprise that permission is communicated with by the fluid of the longitudinal flow passage 86 of the 4th tubular drill string 64.

The method also can comprise the installation in the 3rd tubular drill string 30 in response to the 5th tubular drill string 64a and open second dynamic control device 112.Open second dynamic control device 112 and can comprise that permission is communicated with by the fluid of the longitudinal flow passage 116 of the 3rd tubular drill string 30.

The method can comprise: the supporting member 104 with being connected to the second tubular drill string 26, make laterally spaced deflector 48 of the second tubular drill string 26, and the tubular drill string 26 of laterally deflection of deflector 48 second enters in pit shaft part 18.Supporting member 104 can make the laterally downside of spaced pit shaft part 18 of the second tubular drill string 26.

Before the second tubular drill string 26 deflects in pit shaft part 18, supporting member 104 can straddle on the first tubular drill string 24 at least in part.When the second tubular drill string 26 is arranged on pit shaft part 18 when interior, supporting member 104 can reduce the bending of the second tubular drill string 26.

What below also describe is pit shaft coupling assembling 20.Coupling assembling 20 can comprise at least the first and second

tubular drill strings

24,26 and the tubular drill string connector 22 with the first and second opposite ends 28,32.Each first and second

tubular drill string

24,26 can connect 72,74 by orientation and be fixed to first-phase opposite end 28, and thus, each first and second

tubular drill string

24,26 has the fixedly rotational orientation with respect to connector 22.

Above disclosure also provides well system 10 in row.This well system 10 can comprise having the first and second opposite ends 28, 32 tubular drill string connector 22, be fixed to the first and second tubular drill strings 24 of first-phase

opposite end

28, 26, this first and second

tubular drill string

24, 26 are arranged on and separate crossing pit shaft part 16, in 18, be fixed to the third and fourth tubular drill string 30 of second-phase

opposite end

32, 64, the 4th tubular drill string 64 is arranged in the 3rd tubular drill string 30, first-class dynamic control device 120, it allows selectively and prevents that fluid from flowing through the longitudinal flow passage 116 of the 3rd tubular drill string 30, and second dynamic control device 112, it allows selectively and prevents that fluid from flowing through the longitudinal flow passage 86 of the 4th tubular drill string 64.

First-class dynamic control device 120 can be opened in response to the 5th tubular drill string 64a inserts in the 4th tubular drill string 64.

Second dynamic control device 112 can be opened in response to the 5th tubular drill string 64a inserts in the 3rd tubular drill string 30.First-class dynamic control device 120 can be inserted through second dynamic control device 112 and enters the 4th tubular drill string 64 and open in response to the 5th tubular drill string 64a.

Second dynamic control device 112 can allow and prevent that the fluid between

pit shaft part

16,18 is communicated with selectively.First-class dynamic control device 120 can allow and prevent that the fluid between

pit shaft part

16,18 and the 3rd tubular drill string 30 is communicated with selectively.

What also describe in the above is well system 10, it can comprise the tubular drill string connector 22 with

opposite end

28,32, each first and second

tubular drill string

24,26 is fixed to connector 22, and supporting member 104, it reduces the bending of the second tubular drill string 26, and this bending is by the second tubular drill string 26, from the first pit shaft part 14, to deflect into the second pit shaft part 18 to cause.

Supporting member 104 can make the spaced deflector 48 of the second tubular drill string 26, and this deflector 48 can make the second tubular drill string 26 deflect in the second pit shaft part 18.Supporting member 104 can make the downside of spaced the second pit shaft part 18 of the second tubular drill string 26.

Supporting member 104 can straddle on the first tubular drill string 24 at least in part.

The first and second

tubular drill strings

24,26 can be connected to same one end 28 of connector 22.

The first tubular drill string 24 can be arranged in the 3rd pit shaft part 16.

Should be understood that, various examples described above can be used in various orientations and various structure, and various orientations are such as that tilt, inverted, level, vertical etc., and can not depart from principle of the present invention.Various embodiment shown in accompanying drawing just illustrate and are described as the example of the useful application of the principle of the invention, and it is not limited to any concrete details of these embodiment.

In the description of above representative example, for simplicity, directional terminology (such as " more than ", " top ", " below ", " end ", " on ", D score etc.) be used for relating to the description of the drawings.Usually, no matter pit shaft be level, vertical, tilt or deflection etc., " more than ", " on ", " making progress " and similarly term refer to the direction towards ground along pit shaft, and " below ", D score, " downwards " and similar term refer to the direction away from ground along pit shaft.Should be expressly understood that, the scope of the invention is not limited to any special direction described in literary composition.

Certainly, in the art technician think over above to the description of exemplary embodiment after, easily recognize, to these specific embodiments, can make many modifications, interpolation, substitute, delete and other change, so change all within the scope of the principle of the invention.Therefore, above detailed description should be clearly understood that it is only to provide by means of diagram and example, and the spirit and scope of the present invention are only limited by attached claims and its equivalent.

Claims

1. pit shaft coupling assembling is arranged on to the method in well, the method comprises:

By the orientation of similar size, connect, at least the first and second tubular drill strings are connected to the first-phase opposite end of tubular drill string connector, the first and second tubular drill strings can be connected to connector interchangeably by described directed connection thus.

2. the method for claim 1, is characterized in that, described Connection Step also comprises: each first and second tubular drill string has the rotational orientation with respect to connector, and described rotational orientation is determined by corresponding directed connection.

3. the method for claim 1, is characterized in that, also comprises the orientation on connector is connected and is relative to each other oriented 180 degree.

4. the method for claim 1, is characterized in that, also comprise substantially make to equal angles directed connect spaced each other.

5. the method for claim 1, is characterized in that, also comprises the second-phase opposite end that the 3rd tubular drill string is connected to connector.

6. method as claimed in claim 5, is characterized in that, also comprises the second-phase opposite end that the 4th tubular drill string is connected to connector.

7. method as claimed in claim 6, is characterized in that, described the 4th tubular drill string is positioned in the 3rd tubular drill string at least in part.

8. method as claimed in claim 6, is characterized in that, allow by the 4th tubular drill string and the first and second tubular drill strings only the connector between enter.

9. method as claimed in claim 6, is characterized in that, described the 4th tubular drill string comprises closed hole.

10. method as claimed in claim 9, is characterized in that, also comprises hermetically the 5th tubular drill string is arranged in closed hole.

11. methods as claimed in claim 6, is characterized in that, also comprise in response to the installation in the 4th tubular drill string by the 5th tubular drill string, open first-class dynamic control device.

12. methods as claimed in claim 11, is characterized in that, open first-class dynamic control device and also comprise: allow fluid by the connection of the longitudinal flow passage of the 4th tubular drill string.

13. methods as claimed in claim 11, is characterized in that, also comprise in response to the installation in the 3rd tubular drill string by the 5th tubular drill string, open second dynamic control device.

14. methods as claimed in claim 13, is characterized in that, open second dynamic control device and also comprise: allow fluid by the connection of the longitudinal flow passage of the 3rd tubular drill string.

15. the method for claim 1, is characterized in that, also comprise: in the time of in deflector laterally deflects into the second tubular drill string pit shaft part, with being connected to the supporting member in the second tubular drill string, make laterally spaced deflector of the second tubular drill string.

16. methods as claimed in claim 15, is characterized in that, described supporting member makes the laterally downside of spaced pit shaft part of the second tubular drill string.

17. methods as claimed in claim 15, is characterized in that, before the second tubular drill string deflects in pit shaft part, described supporting member straddles at least in part on the first tubular drill string.

18. methods as claimed in claim 15, is characterized in that, in the time of in the second tubular drill string is arranged on pit shaft part, described supporting member reduces the bending of the second tubular drill string.

19. 1 kinds of pit shaft coupling assemblings, this pit shaft coupling assembling comprises:

At least the first and second tubular drill strings; And

Tubular drill string connector, described tubular drill string connector has the first and second opposite ends, each first and second tubular drill string is affixed to first-phase opposite end by orientation, and thus, each first and second tubular drill string has the fixedly rotational orientation with respect to connector.

20. pit shaft coupling assemblings as claimed in claim 19, is characterized in that, it is similar size that the orientation on connector connects, and thus, the first and second tubular drill strings are connected to connector interchangeably by described directed connection.

21. pit shaft coupling assemblings as claimed in claim 19, is characterized in that, the orientation connection on connector is relative to each other oriented 180 degree.

22. pit shaft coupling assemblings as claimed in claim 19, is characterized in that, orientation is connected on connector that equal angles ground is spaced each other substantially.

23. pit shaft coupling assemblings as claimed in claim 19, is characterized in that, the 3rd tubular drill string is connected to the second-phase opposite end of connector.

24. pit shaft coupling assemblings as claimed in claim 23, is characterized in that, the 4th tubular drill string is connected to the second-phase opposite end of connector.

25. pit shaft coupling assemblings as claimed in claim 24, is characterized in that, described the 4th tubular drill string is positioned in the 3rd tubular drill string.

26. pit shaft coupling assemblings as claimed in claim 24, is characterized in that, allow by the 4th tubular drill string and the first and second tubular drill strings only the connector between enter.

27. pit shaft coupling assemblings as claimed in claim 24, is characterized in that, described the 4th tubular drill string comprises closed hole.

28. pit shaft coupling assemblings as claimed in claim 27, is characterized in that, the 5th tubular drill string is received within closed hole hermetically.

29. pit shaft coupling assemblings as claimed in claim 24, is characterized in that, in response to the installation in the 4th tubular drill string by the 5th tubular drill string, open first-class dynamic control device.

30. pit shaft coupling assemblings as claimed in claim 29, is characterized in that, first-class dynamic control device stops selectively and allows fluid by the connection of the longitudinal flow passage of the 4th tubular drill string.

31. pit shaft coupling assemblings as claimed in claim 29, is characterized in that, in response to the installation in the 3rd tubular drill string by the 5th tubular drill string, open second dynamic control device.

32. pit shaft coupling assemblings as claimed in claim 31, is characterized in that, second dynamic control device stops selectively and allows fluid by the connection of the longitudinal flow passage of the 3rd tubular drill string.

33. pit shaft coupling assemblings as claimed in claim 19, it is characterized in that, also comprise: in the time of in deflector laterally deflects into the second tubular drill string pit shaft part, with being connected to the supporting member in the second tubular drill string, make laterally spaced deflector of the second tubular drill string.

34. pit shaft coupling assemblings as claimed in claim 33, is characterized in that, described supporting member makes the laterally downside of spaced pit shaft part of the second tubular drill string.

35. pit shaft coupling assemblings as claimed in claim 33, is characterized in that, before the second tubular drill string deflects in pit shaft part, described supporting member straddles at least in part on the first tubular drill string.

36. pit shaft coupling assemblings as claimed in claim 33, is characterized in that, in the time of in the second tubular drill string is arranged on pit shaft part, described supporting member reduces the bending of the second tubular drill string.

37. 1 kinds of well systems, this well system comprises:

The tubular drill string connector with the first and second opposite ends;

Be fixed to the first and second tubular drill strings of first-phase opposite end, the first and second tubular drill strings are arranged on and separate in crossing pit shaft part;

Be fixed to the third and fourth tubular drill string of second-phase opposite end, the 4th tubular drill string is arranged in the 3rd tubular drill string;

First-class dynamic control device, described first-class dynamic control device allows selectively and stops fluid to flow through the longitudinal flow passage of the 3rd tubular drill string; And

Second dynamic control device, described second dynamic control device allows selectively and stops fluid to flow through the longitudinal flow passage of the 4th tubular drill string.

38. well systems as claimed in claim 37, is characterized in that, in response to the 5th tubular drill string, insert in the 4th tubular drill string, open first-class dynamic control device.

39. well systems as claimed in claim 37, is characterized in that, in response to the 5th tubular drill string, insert in the 3rd tubular drill string, open second dynamic control device.

40. well systems as claimed in claim 39, is characterized in that, in response to the 5th tubular drill string, are inserted through second dynamic control device and enter in the 4th tubular drill string, open first-class dynamic control device.

41. well systems as claimed in claim 37, is characterized in that, second dynamic control device allows selectively and stops the connection of fluid between pit shaft part.

42. well systems as claimed in claim 37, is characterized in that, first-class dynamic control device allows selectively and stops the connection of fluid between pit shaft part and the 3rd tubular drill string.

43. 1 kinds of well systems, this well system comprises:

The tubular drill string connector with opposite end, the first and second tubular drill strings are respectively fixed to connector; And

Supporting member, described supporting member reduces the bending of the second tubular drill string, and this bending is by the second tubular drill string, from the first pit shaft, partly to deflect into the second pit shaft part to cause.

44. well systems as claimed in claim 43, is characterized in that, described supporting member makes the spaced deflector of the second tubular drill string, and this deflector deflects in the second pit shaft part the second tubular drill string.

45. well systems as claimed in claim 43, is characterized in that, described supporting member makes the downside of spaced the second pit shaft part of the second tubular drill string.

46. well systems as claimed in claim 43, is characterized in that, described supporting member straddles on the first tubular drill string at least in part.

47. well systems as claimed in claim 43, is characterized in that, described the first and second tubular drill strings are connected to same one end of connector.

48. well systems as claimed in claim 47, is characterized in that, described the first tubular drill string is arranged in the 3rd pit shaft part.